1. Template DNA: This provides the sequence information for the newly synthesized DNA strand. It acts as a blueprint.
2. Deoxynucleoside Triphosphates (dNTPs): These are the building blocks of DNA. They consist of a deoxyribose sugar, a phosphate group, and one of the four nitrogenous bases (adenine, guanine, cytosine, or thymine). The enzyme DNA polymerase uses these dNTPs to create the new DNA strand.
3. DNA Polymerase: This enzyme is responsible for catalyzing the polymerization of dNTPs into a new DNA strand, following the base pairing rules with the template DNA.
4. Primer: A short sequence of nucleotides that provides a starting point for DNA polymerase to begin synthesis. It must be complementary to the template strand.
5. Magnesium Ions (Mg2+): These ions are essential cofactors for DNA polymerase, helping it to bind to the template and dNTPs.
These five components work together to create a new DNA strand that is complementary to the template DNA.
